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https://github.com/GoldenCheetah/GoldenCheetah.git
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2f9130cd76
Upgrade to QWT 6.0.1, but still uses a locally patched copy since support for 8 axes has not been included, despite it being a relatively simple patch. Fixes #634. Fixes #567.
87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
#include "knob.h"
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#include <qwt_math.h>
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#include <qpen.h>
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#include <qwt_knob.h>
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#include <qwt_round_scale_draw.h>
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#include <qwt_scale_engine.h>
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#include <qlabel.h>
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#include <qevent.h>
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Knob::Knob(const QString &title, double min, double max, QWidget *parent):
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QWidget(parent)
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{
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QFont font("Helvetica", 10);
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d_knob = new QwtKnob(this);
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d_knob->setFont(font);
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d_knob->setRange(min, max);
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QwtScaleDiv scaleDiv =
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d_knob->scaleEngine()->divideScale(min, max, 5, 3);
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QList<double> ticks = scaleDiv.ticks(QwtScaleDiv::MajorTick);
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if ( ticks.size() > 0 && ticks[0] > min )
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{
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if ( ticks.first() > min )
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ticks.prepend(min);
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if ( ticks.last() < max )
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ticks.append(max);
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}
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scaleDiv.setTicks(QwtScaleDiv::MajorTick, ticks);
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d_knob->setScale(scaleDiv);
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d_knob->setKnobWidth(50);
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font.setBold(true);
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d_label = new QLabel(title, this);
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d_label->setFont(font);
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d_label->setAlignment(Qt::AlignTop | Qt::AlignHCenter);
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setSizePolicy(QSizePolicy::MinimumExpanding,
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QSizePolicy::MinimumExpanding);
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connect(d_knob, SIGNAL(valueChanged(double)),
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this, SIGNAL(valueChanged(double)));
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}
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QSize Knob::sizeHint() const
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{
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QSize sz1 = d_knob->sizeHint();
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QSize sz2 = d_label->sizeHint();
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const int w = qMax(sz1.width(), sz2.width());
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const int h = sz1.height() + sz2.height();
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int off = d_knob->scaleDraw()->extent(d_knob->font());
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off -= 10; // spacing
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return QSize(w, h - off);
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}
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void Knob::setValue(double value)
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{
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d_knob->setValue(value);
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}
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double Knob::value() const
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{
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return d_knob->value();
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}
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void Knob::resizeEvent(QResizeEvent *e)
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{
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const QSize sz = e->size();
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int h = d_label->sizeHint().height();
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d_label->setGeometry(0, sz.height() - h,
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sz.width(), h);
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h = d_knob->sizeHint().height();
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int off = d_knob->scaleDraw()->extent(d_knob->font());
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off -= 10; // spacing
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d_knob->setGeometry(0, d_label->pos().y() - h + off,
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sz.width(), h);
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}
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